/*
 * Copyright (c) 2011, Yawning <yawninglol at gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   * Neither the name of the Mew Developers nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package yawning.mew.sim;

import java.util.LinkedList;
import java.util.List;

public class SimulationEventUtilityTimer extends SimulationEvent {
	private List<Double> mTimerList;

	public SimulationEventUtilityTimer(SimulationEngine su) {
		super(su);
		mTimerList = new LinkedList<Double>();
	}

	public void scheduleCallback(double when) {
		if (when < mSimEngine.getSimTime())
			throw new RuntimeException("Attempted to schedule a utility timer in the past.");

		int idx;
		for (idx = 0; idx < mTimerList.size(); idx++)
			if (when < mTimerList.get(idx)) break;
		mTimerList.add(idx, when);

		schedule(mTimerList.get(0) - mSimEngine.getSimTime());
	}

	@Override
	public void onExpire() {
		mTimerList.remove(0);

		mSimEngine.mStrategy.onUtilityTimerFire(mSimEngine.mStatus);

		if (!mTimerList.isEmpty()) {
			if (isUp()) cancel();

			schedule(mTimerList.get(0) - mSimEngine.getSimTime());
		}
	}
}
